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San Juan weather

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The weather map: all three models at once

European, American, German side by side around San Juan and nearby towns.Live rain radar →
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Hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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10-day forecast, out to 14 days

where the models agree, and where they split

Heading to San Juan? San Juan, Puerto Rico, sits at 18.5°N in a tropical climate zone. Before you lock in outdoor plans, compare how the three global models - European (ECMWF), American (GFS) and German (ICON) - forecast San Juan right now. Where they agree you can trust it; the days they split are exactly when a single weather app is least reliable. For a beach trip the rain and wind columns below matter most - that is what makes or breaks a day by the sea.

Best time to visit San Juan

The most comfortable time to visit San Juan is usually January, February, March and April, when daytime highs sit in the pleasant 75-92°F range and the heaviest November rain is behind you.

San Juan weather by month

what to expect in San Juan through the year

Here is San Juan's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to San Juan by season.

Jan
82°
73°
Warm
Feb
81°
72°
Warm
Mar
83°
72°
Warm
Apr
83°
73°
Warm
May
87°
76°
Hot
Jun
89°
79°
Hot
Jul
85°
79°
Hot
Aug
86°
79°
Hot
Sep
86°
79°
Hot
Oct
86°
78°
Hot
Nov
84°
77°
Warm
Wettest
Dec
82°
75°
Warm

Common questions

When is the best time to visit San Juan?
The most comfortable time to visit San Juan is usually January, February, March and April, when daytime highs sit in the pleasant 75-92°F range and the heaviest November rain is behind you.
Will it rain in San Juan during my trip?
Rain is where forecasts disagree most. Instead of trusting one app, the comparison above lines up the European, American and German models for San Juan - check your dates and look for the days they agree; those are the ones you can plan around.
Which forecast is most accurate for San Juan?
For destinations abroad we compare the three global models (ECMWF, GFS and ICON) that nearly every weather app quietly builds on. No single app tells you when they disagree - we do, so you can judge the confidence yourself.

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